EP2071690A3 - Overvoltage protection circuit and electronic device comprising the same - Google Patents

Overvoltage protection circuit and electronic device comprising the same Download PDF

Info

Publication number
EP2071690A3
EP2071690A3 EP08021540A EP08021540A EP2071690A3 EP 2071690 A3 EP2071690 A3 EP 2071690A3 EP 08021540 A EP08021540 A EP 08021540A EP 08021540 A EP08021540 A EP 08021540A EP 2071690 A3 EP2071690 A3 EP 2071690A3
Authority
EP
European Patent Office
Prior art keywords
voltage
input end
overvoltage protection
protection circuit
allowable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08021540A
Other languages
German (de)
French (fr)
Other versions
EP2071690A2 (en
Inventor
Syuichi Nintendo Co. Ltd. Tsugawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nintendo Co Ltd
Original Assignee
Nintendo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nintendo Co Ltd filed Critical Nintendo Co Ltd
Publication of EP2071690A2 publication Critical patent/EP2071690A2/en
Publication of EP2071690A3 publication Critical patent/EP2071690A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

An overvoltage protection circuit prevents a voltage higher than an allowable voltage value from being supplied to a predetermined to-be-protected circuit. A voltage is applied from outside to an input end (11). A cathode terminal of a zener diode (13) is connected to the input end (11). A first resistance element (14) is connected between an anode terminal of the zener diode (13) andagroundterminal. A voltage detection integrated circuit (15) detects a voltage between both ends of the zener diode (13), and outputs a detection signal that indicates whether or not the detected voltage is higher than the allowable voltage value. When the detection signal indicates that the detected voltage is no higher than the allowable voltage value, a MOSFET (16) supplies the to-be-protected circuit with the voltage applied to the input end (11). When the detection signal indicates that the detected voltage is higher than the allowable voltage value, the MOSFET (16) ceases the supply, to the to-be-protected circuit, of the voltage applied to the input end (11).
EP08021540A 2007-12-14 2008-12-11 Overvoltage protection circuit and electronic device comprising the same Withdrawn EP2071690A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007323827A JP5427356B2 (en) 2007-12-14 2007-12-14 Overvoltage protection circuit and electronic device including the same

Publications (2)

Publication Number Publication Date
EP2071690A2 EP2071690A2 (en) 2009-06-17
EP2071690A3 true EP2071690A3 (en) 2013-03-20

Family

ID=40428637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08021540A Withdrawn EP2071690A3 (en) 2007-12-14 2008-12-11 Overvoltage protection circuit and electronic device comprising the same

Country Status (3)

Country Link
US (1) US8508900B2 (en)
EP (1) EP2071690A3 (en)
JP (1) JP5427356B2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3694067B1 (en) * 2006-12-01 2022-06-15 Nokia Technologies Oy Over-voltage protection circuit
KR101605349B1 (en) * 2009-11-19 2016-03-22 삼성전자주식회사 Mobile terminal for performing black box function and method for working thereof
US8462477B2 (en) * 2010-09-13 2013-06-11 Analog Devices, Inc. Junction field effect transistor for voltage protection
DE102011012284A1 (en) * 2011-02-24 2012-08-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Overvoltage protection circuit and method for checking an overvoltage protection circuit
CN102738662A (en) * 2011-03-31 2012-10-17 富泰华工业（深圳）有限公司 Interface, electronic apparatus with interface and protection method thereof
US8689033B2 (en) * 2011-07-27 2014-04-01 Freescale Semiconductor, Inc. Power supply and data signal interface circuit with overvoltage protection
TW201315073A (en) * 2011-09-27 2013-04-01 Askey Technology Jiangsu Ltd Overvoltage protection circuit
CN103178500A (en) * 2011-12-23 2013-06-26 联芯科技有限公司 Overvoltage protection circuit and overvoltage protection method of terminal VCHG pin
CN103036196B (en) * 2012-12-03 2015-11-25 华为技术有限公司 Over-pressure safety device and method
CN203166467U (en) * 2013-03-20 2013-08-28 向智勇 Overvoltage protection circuit
CN104065042A (en) * 2013-03-21 2014-09-24 昂纳信息技术（深圳）有限公司 Power supply input protection circuit and method
DE102013107699A1 (en) * 2013-07-18 2015-01-22 Springburo GmbH voltage limiter
GB2550977B (en) * 2016-05-31 2020-07-22 Cirrus Logic Int Semiconductor Ltd Monitoring of devices
CN109518194A (en) * 2017-09-19 2019-03-26 北京太古行科技发展有限责任公司 A kind of protection system and control method for preventing electrochemical metal from corroding
US11705716B2 (en) 2021-11-22 2023-07-18 Google Llc Input power control and protection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1118280A (en) * 1997-06-18 1999-01-22 Sony Corp Overvoltage protection circuit
DE10315176A1 (en) * 2002-04-09 2003-10-23 Fuji Electric Co Ltd Overvoltage protection circuit for integrated CMOS circuit has potential divider unit, signal generator unit, switch unit mounted on same semiconducting substrate as integrated circuit to be protected

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649113Y2 (en) * 1989-12-27 1994-12-12 いすゞ自動車株式会社 Vehicle power supply
JPH06245366A (en) * 1993-02-17 1994-09-02 Fuji Electric Co Ltd Overvoltage protective circuit
JP2002218645A (en) * 2001-01-22 2002-08-02 Konica Corp Power source protective circuit and removable disk device
US6606227B2 (en) * 2001-02-12 2003-08-12 Delphi Technologies, Inc. High voltage battery cutout circuit for a motor vehicle electrical system
TW517422B (en) * 2001-05-18 2003-01-11 Palmax Technology Co Ltd Input protection circuit of hand-held electrical apparatus
JP3848265B2 (en) 2003-01-21 2006-11-22 ローム株式会社 Electronic equipment
JP2006067187A (en) * 2004-08-26 2006-03-09 Matsushita Electric Ind Co Ltd Overvoltage/overcurrent protective circuit
JP2007006582A (en) * 2005-06-22 2007-01-11 Toyota Industries Corp Overvoltage protection circuit
JP5426809B2 (en) 2006-05-30 2014-02-26 本田技研工業株式会社 Secondary battery, electronic equipment using secondary battery and transportation equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1118280A (en) * 1997-06-18 1999-01-22 Sony Corp Overvoltage protection circuit
DE10315176A1 (en) * 2002-04-09 2003-10-23 Fuji Electric Co Ltd Overvoltage protection circuit for integrated CMOS circuit has potential divider unit, signal generator unit, switch unit mounted on same semiconducting substrate as integrated circuit to be protected

Also Published As

Publication number Publication date
JP5427356B2 (en) 2014-02-26
US8508900B2 (en) 2013-08-13
JP2009148097A (en) 2009-07-02
US20090154039A1 (en) 2009-06-18
EP2071690A2 (en) 2009-06-17

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